Carrot, Spinach, Cucumber, and Tomato are all non-starchy vegetables that grow above the ground. Potato, however, is a starchy vegetable that grows underground as a tuber. Therefore, Potato is the odd one out.

Mercury, Venus, Earth, and Mars are all terrestrial planets (rocky, Earth-like planets). Jupiter, on the other hand, is a gas giant, making it the odd one out.

Apple, Mango, Orange, and Grapes are all fruits with seeds. The Banana, although a fruit, is a seedless fruit in the typical sense, as the seeds are tiny and not fully developed. Therefore, the Banana is the odd one out.

Cricket, Baseball, Hockey, and Football are all team sports played with a ball on a field, while Tennis is an individual sport played on a court. Thus, Tennis is the odd one out.

Shark, Whale, Dolphin, and Seal are all mammals or fish that live in the ocean. Penguin is a bird that lives in the water but cannot fly. Therefore, Penguin is the odd one out.

C, C++, Java, and Python are programming languages, while SQL (Structured Query Language) is a database query language. Therefore, SQL is the odd one out.

The odd one out is Teacher, as it is the only profession that doesn't typically require a technical or specialized degree in comparison to the others:

• Doctor requires a medical degree.
• Engineer requires an engineering degree.
• Architect requires a degree in architecture.

The odd one out is Potato, as it is the only one that is a root vegetable. The others (Carrot, Tomato, Lettuce) are either leaf vegetables (Lettuce), or fruits (Tomato).

The odd one out is Fish, as it is the only animal that lives in water and breathes through gills. The others (Dog, Cat, Rat) are all land animals (or land-dwelling) that breathe air through lungs.

The odd one out is Poe. While Shakespeare, Dickens, and Chaucer were all English writers, Edgar Allan Poe was an American writer.